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All results from a given calculation for CH (Methylidyne)

using model chemistry: CCSD(T)/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π1/2
3 1 yes C*V 4Σ-

State 1 (2Π1/2)

Jump to S2C1 S3C1
Energy calculated at CCSD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-38.387315
Energy at 298.15K 
HF Energy-38.275112
Nuclear repulsion energy2.783684
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2815 2709        

Unscaled Zero Point Vibrational Energy (zpe) 1407.5 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 1354.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVDZ
B
13.95021

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.163
H2 0.000 0.000 -0.977

Atom - Atom Distances (Å)
  C1 H2
C11.1401
H21.1401

picture of Methylidyne state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (2Π3/2)

Jump to S1C1 S3C1
Energy calculated at CCSD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-38.387315
Energy at 298.15K 
HF Energy-38.275112
Nuclear repulsion energy2.783684
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVDZ
B
13.95021

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVDZ

Point Group is C∞v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 3 (4Σ-)

Jump to S1C1 S2C1
Energy calculated at CCSD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-38.363757
Energy at 298.15K-38.362405
HF Energy-38.281520
Nuclear repulsion energy2.867184
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3077 2962        

Unscaled Zero Point Vibrational Energy (zpe) 1538.7 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 1481.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVDZ
B
14.80025

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.158
H2 0.000 0.000 -0.949

Atom - Atom Distances (Å)
  C1 H2
C11.1068
H21.1068

picture of Methylidyne state 3 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability